#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        for (int j = i; j < n; j++) {
            cout << " ";
        }
        for (int j = 1; j <= i; j++) {
            cout << "AA";
        }
        cout << endl;
    }
    for (int i = n - 1; i > 0; i--) {
        for (int j = i; j < n; j++) {
            cout << " ";
        }
        for (int j = 1; j <= i; j++) {
            cout << "AA";
        }
        cout << endl;
    }
    return 0;   
}